ASTROSAT CZTI

Data Quality Report

Orbit 28143

Creation date: 2024-06-27T19:48:32.796741
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A10_045T04_9000004066_28143cztM0_level2.evt modeM0/AS1A10_045T04_9000004066_28143cztM0_level2_quad_clean.evt
Size (bytes)555,422,40089,760,960
Size529.7 MB 85.6 MB
Events in quadrant A3,527,425561,956
Events in quadrant B3,768,365571,528
Events in quadrant C3,691,851545,260
Events in quadrant D5,337,784530,536

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150730
B0157360
C0154340
D0208420

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73051622.217659%
B73062002.737476%
C73062182.983849%
D73052863.915127%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7595 7305 0 0 0.00% 0.00%
B 7596 7306 29 29 0.38% 0.40%
C 7596 7306 3 3 0.04% 0.04%
D 7595 7305 140 140 1.84% 1.92%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 13087 65.88 911 891 185.1
A 15 174 12659 63.57 911 891 185.1
A 3 137 9031 43.97 911 891 185.1
B 10 246 102941 587.54 895 872 173.7
B 10 245 88754 505.88 895 872 173.7
B 15 32 23702 131.42 895 872 173.7
C 14 238 139285 673.73 871 875 205.4
C 3 233 121311 586.24 871 875 205.4
C 15 208 23944 112.29 871 875 205.4
D 1 52 676441 3247.88 877 856 208.0
D 7 223 452410 2170.85 877 856 208.0
D 2 250 246705 1181.92 877 856 208.0

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter